Improvement in cooking apparatus



[UNITED STATEs PATENT EEICE.

BENJAMIN GILES, OF BLACKHEATH, ENGLAND.

IMPROVEMENT IN COOKING APPARATUS.

Specification forming part of Letters Patent No. 151,871, dated June 9, 18711; application nled October 29, 1873.

To all whom 'it may concern:

Be it known that I, BENJAMIN GILEs, of Blackheath, in the county of Kent, England, have invented a certain Improved Cooking Apparatus, of which the following is a specification:

This invention consists in the construction of au improved gas cooking apparatus, in which the whole of the heat from the gas employed is utilized, and contact of the viands with the fumes of the gas is avoided. The improved cooking apparatus is applicable for roasting, baking, boiling, stewing, grilling, and frying, and also for heating water for domestic purposes.

'Io make my invention better understood, I will proceed to describe the same by reference to the accompanying drawing, in which- Figure 1 is a plan, and Fig. 2 a front elevation, of my improved cooking apparatus. Fi g. 3 is a section on line A B, Fig. l; and Fig. Il, a section on linev C D, Fig. 1.

Similar letters in all the figures represent similar parts.

The improved apparatus is constructed of an oven, a a, made of sheet-iron. A jacket, b b b, is applied at the sides, top, bottom, and back of the oven a, the space a2 between the oven a and the jacket b forming the space or chamber for the circulation of the air heated by the gas. In this chamber a2 I place heatconductors, formed preferably of strips of thin sheet metal, twisted into a spiral form by being coiled around a rod or cylinder of about half an inch in diameter. rlhese heat-conductors are placed vertically at the sides and back of the heat-chamber, and horizontally in the top and bottom of the same, and present a large heating-surface at the same time that they effect a thorough circulation of the air. Other heat-conductors maybe employedsuch, for example, as lumps of fire-brick, pumiee-stone, asbestus, or metal, which are, by preference, perforated, and so placed as to allow of the free circulation of the air through them. At the lower part of one side of the air-chamber is placed a number of gas jets or burners, c, Fig. 3. (Shown also in dotted lines at Fig. 4.) The gas-jets may be placed at either side or both sides of the oven. A grating, c1, is placed at some distance above the burners c, on which the heat-conductors rest, the space c2 thus forming an open chamber, in which the gas is burned. Instead of a single row of burners, as shown, two rows may be employed, placed at an angle and pointing to ward one another. I can also, it' found desirable, place the burners c in an open chamber formed underneath the bottom of the oven a. The front el of the apparatus, including the door al of the oven, is made of cast-iron. At the side and top ot the jacket b is a chamber or boiler, c el, for heating water. The top c2 of this water-chamber forms a hot plate for grilling, as hereinafter described. At a short distance above the chamber c1 is another water-chamber, f, the tubes g g connecting the two chambers together. The cold water is supplied to the boiler or water-chambers by a suitably-placed supply-cisteru, with ball-cock, and the water is drawn off, as required, by the tap It. The water may also be employed for baths and other purposes, on the circula tion principle or otherwise. is a hot plate at the top of the apparatus. jjj show gas rings, placed in hollow spaces made in the water-chamberf. rIhe burners 7c 7c of the gasrings j are placed at an angle, as shown, by which the heat is thrown downward as well as upward, and smoke and smell avoided. Z is the pipe supplying the gas to the pipe m, connected by the elbow m to the pipe a of the gas-burners c for heating the apparatus, and also to the pipes o and p, supplying the gasrings; q, stop-cock for regulating' the supply of gas to the whole of theapparatus; r r r, stop-cocks of the gas-rings s, small door, closing an opening in the front of the apparatus, through which the vgas jets or burners c are lighted; t, ventilator in the door al of the oven; u, pipe from the air-chamber a2, and leading to the flue; or, instead of the waste heat being conveyed direct to the iiue, it may be utilized for other purposes.

To make use of this improved cooking apparatus, the gas is lighted at the burners c. The external air, entering the chamber through the opening o at the side of the apparatus, is heated and passes upward through the grating cl, and then circulates freely through the heat-conductors in the space a2. These heatconductors become quickly heated, and, conj' are also heated. The joints or other articles of food to be roasted or baked are placed in the usual utensils on the shelves w of the oven, and will be cooked without contact with the fumes of gas. For boiling', stewing, or frying, the ring-burners are employed, the sauce-pans or other cooking utensils being placed on the open ironwork on the hot plate i, and over the said ring-burners. For grilL ing, the grill or grills are placed on the hot plate c2, the cooking being ei'ected by the downward heat from the ring-burners.

I would observe that, in constructing a cheaper forni of apparatus, I dispense with that part of the air-chamber a2 at the bottom and back of the apparatus, and also with the water-chambers e1 and f.

That I claim is- 1. In a gas cookingl apparatus, the combination of an oven, a, with a jacket, b, forming chambers c2 at the sides, top, bottoni, and back of such oven a, heat-conductors o3, burners c, applied either at one or both sides of the oven a, chamber c2, and grating c1, constructed and arranged substantially as and for the purposes set forth.

2. In a gas cooking apparatus, the combination, with a jacket, b, burners c, chamber c2, grating c1, and heat-conductors c3, of the boilers@ el, formed at the side and top of the jacket b, the water-chamberf, and tubes or pipes g g, constructed and arranged substantially as and for the purposes specified.

3. In a gas cooking apparatus, constructed as described, the combination of the boiler e c1, water-chamberf, and plate i with a series of gas-rings, j, and burners k, such burners 7c projecting upward and downward alternately, whereby an upward as well as a downward direction is given to the heat, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand and aixed my seal Ithis sixteenth day of July, one thousand eight hundred and seventythree.

B. GILES. lL. s]

Vitnesses:

XV. A. GILBEE, G. F. REDFERN. 

